OrmLite Stored Procedure Usage

The Raw SQL APIs provide a convenient way for mapping results of any Custom SQL like executing Stored Procedures:

List<Poco> results = db.SqlList<Poco>("EXEC GetAnalyticsForWeek 1");
List<Poco> results = db.SqlList<Poco>(
    "EXEC GetAnalyticsForWeek @weekNo", new { weekNo = 1 });

List<int> results = db.SqlList<int>("EXEC GetTotalsForWeek 1");
List<int> results = db.SqlList<int>(
    "EXEC GetTotalsForWeek @weekNo", new { weekNo = 1 });

int result = db.SqlScalar<int>("SELECT 10");

Stored Procedures with output params

The SqlProc API provides even greater customization by letting you modify the underlying ADO.NET Stored Procedure call by returning a prepared IDbCommand allowing for advanced customization like setting and retrieving OUT parameters, e.g:

string spSql = @"DROP PROCEDURE IF EXISTS spSearchLetters;
    CREATE PROCEDURE spSearchLetters (IN pLetter varchar(10), OUT pTotal int)
    BEGIN
        SELECT COUNT(*) FROM LetterFrequency WHERE Letter = pLetter INTO pTotal;
        SELECT * FROM LetterFrequency WHERE Letter = pLetter;
    END";

db.ExecuteSql(spSql);

using var cmd = db.SqlProc("spSearchLetters", new { pLetter = "C" });
var pTotal = cmd.AddParam("pTotal", direction: ParameterDirection.Output);

var results = cmd.ConvertToList<LetterFrequency>();
var total = pTotal.Value;

An alternative approach is to use SqlList which lets you use a filter to customize a Stored Procedure or any other command type, e.g:

IDbDataParameter pTotal = null;
var results = db.SqlList<LetterFrequency>("spSearchLetters", cmd => {
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.AddParam("pLetter", "C");
        pTotal = cmd.AddParam("pTotal", direction: ParameterDirection.Output);
    });
var total = pTotal.Value;

More examples can be found in SqlServerProviderTests.